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Science Matters: Rain Forest, Moon, Rocks, and Machines, a Weekly Reader publication
Simple Machines.(Brief Article)
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Simple Machines.(Brief Article)
Publication: Science Matters: Rain Forest, Moon, Rocks, and Machines, a Weekly Reader publication Publication Date: 01-JAN-93 |
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COPYRIGHT 1993 Weekly Reader Corp.
What do you think of when you hear the world machine? Do you think of something big and loud? Something that runs on electricity? Most people do. But a machine is anything that makes work easier. Look at the simple machines below. They are the basis of all other...
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